books.google.com - With close to 300 different illusions, this is one of the most comprehensive and amazing collections of optical illusions ever assembled....https://books.google.com/books/about/Incredible_Visual_Illusions.html?id=8_CMisLCGrsC&utm_source=gb-gplus-shareIncredible Visual Illusions

About the author (2003)

Al Seckel is currently working on a comprehensive academic treatise on illusions for Massachusetts Institute of Technology and working in the Division of Computational and Neuronal Systems at Cal Tech in Pasadena. He lives in Pasadena, California.